Question

24,5 - ( y : 4 + y × 6 ) = 3,5

Answer 1

$24,5-(y:4+y\times 6)=3,5$

$(y\times \frac{1}{4}+y\times 6)=24,5-3,5$

$y\times \frac{1}{4}+y\times 6=21$

$y\times (\frac{1}{4}+6)=21$

$y=21:(\frac{1}{4}+6)$

$y=\frac{84}{25}$